Abstract

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Title:: Temperature field analysis for axial flow blood pump motor and damages of increased motor temperature to blood and tissue

Author(s):: HU Jiyu; YUN Zhong; XIANG Chuang; PENG Ge; School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China

Keywords:: ; blood; tissue; axial flow blood pump; temperature field analysis; damage

Abstract:: Abstract: Objective To analyze the damages of increased temperatures around an axial flow blood pump motor to blood and tissue by simulating the temperature field of the motor and explore the countermeasures. Methods By simulating the transient temperature field of the motor using ANSYS and constructing a dynamic blood temperature model with FLUENT, we analyzed the temperature changes of the blood and tissue around the axial flow blood pump motor. Results The temperature distribution cloud map when the motor ran stably revealed relatively high temperatures on the stator winding and stator. The temperature rises of the blood and tissue were obtained by analyzing the temperature fields of the bottom and top shells of the motor. The pattern of blood temperature variation during motor-driven blood flow was derived from the dynamic blood temperature model. Conclusion The temperature rise of the blood and tissue around the axial flow blood pump motor can be reduced by adjusting the current, and the temperature rise does not cause detrimental effects on the blood and tissue when the current is maintained below 0.9 A. This finding provides a theoretical basis for clinical application and parameter optimization of axial flow blood pump.